描述了一种温和且操作简单的铜催化乙烯基有氧氧化 β,γ-和 α,β-不饱和酯。该方法具有收率好、底物范围广、化学选择性和区域选择性好、官能团耐受性好等特点。该方法还能够氧化β,γ-和α,β-不饱和醛、酮、酰胺、腈和砜。此外,本催化体系适用于双乙烯基和三乙烯基氧化。发现四甲基胍 (TMG) 作为碱的作用至关重要,但我们也推测它可以作为三氟甲磺酸铜 (II) 的配体来生产活性铜 (II) 催化剂。进行的机械实验表明,通过烯丙基铜 (II) 物质存在一个合理的反应途径。最后,
17-Aryl and 17-heterocyclyl-14beta-5alpha-androstane, androstene and androstadiene derivatives active on the cardiovascular system, processes for their preparation and pharmaceutical compositions containing same
17-Aryl and heterocyclyl-5α,14β-androstane and androstene and androstadiene derivatives of formula (I):
wherein:
The symbols , , Y, R and R1 have the meaning indicated in the description, a process for their preparation and pharmaceutical compositions containing same.